2021 Ram Promaster 2500 Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

19 Coolant / Antifreeze parts are listed for the 2021 Ram Promaster 2500, from PRESTONE, VALVOLINE, PEAK and 3 other brands. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 3 options from VALVOLINE and PRESTONE — rated for severe service. VALVOLINE ZXG051 is listed in this group.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 6 options from VALVOLINE, AISIN, MOPAR and 1 other brand — built to original-equipment specification. VALVOLINE ZXEL1 is listed in this group.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

5 Coolant Hose / Pipe parts are listed for the 2021 Ram Promaster 2500, from DORMAN, MOPAR and GATES. GATES 52003 carries the "Popular" badge.

This group includes GATES 52003, DORMAN 626798 and DORMAN 9365501 and the remaining parts above.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

6 Coolant Reservoir parts for the 2021 Ram Promaster 2500 come from 5 brands — TECHPRO, AUTOTECNICA, DORMAN and 2 other brands. The "Popular" part is AUTOTECNICA DG0718878.

Part numbers include AUTOTECNICA DG0718878, DORMAN 603832 and GPD 2411207, among others listed above.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

3 Coolant Reservoir Cap parts for the 2021 Ram Promaster 2500 come from 3 brands — DORMAN, GATES and MOTORAD.

Listed part numbers: DORMAN 54375, GATES 31329 and MOTORAD T75.

This table covers the Cooling Fan control modules. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS RY2049.

This table covers the adapters used to pressure-test this cooling system. Read more

One part is listed for the 2021 Ram Promaster 2500 — GATES 31371.

This table covers the Hose clamps. Read more

MOPAR supplies the 6 Hose Clamp parts for the 2021 Ram Promaster 2500. MOPAR 6107386AA carries the "Popular" badge.

Part numbers include MOPAR 6107386AA, MOPAR 6106358AA and MOPAR 6511009AA, among others listed above.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

9 Radiator parts are listed for the 2021 Ram Promaster 2500, from ULTRA-POWER, CSF, DENSO and 6 other brands. CSF 4024 carries the "Popular" badge.

Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 13448.

The Standard Replacement section: 8 options from CSF, DENSO, AGILITY and 5 other brands. CSF 4024 is listed in this group.

Part numbers include CSF 4024, ULTRA-POWER 13448 and DENSO 2219408, among others listed above.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

16 Radiator Fan Assembly parts for the 2021 Ram Promaster 2500 come from 8 brands — DORMAN, SKP, GPD and 5 other brands. The "Popular" part is DORMAN 621637.

The Economy section: 6 options from DORMAN, SKP and GPD. DORMAN 621637 is listed in this group.

Standard Replacement: 10 parts, from AGILITY, TYC, FOUR SEASONS and 2 other brands. A representative part number is AGILITY 6010378.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

7 Radiator Hose parts for the 2021 Ram Promaster 2500 come from 4 brands — GATES, DORMAN, MOPAR and 1 other brand. The "Popular" part is GATES 51888.

This group includes GATES 51888, GATES 24796 and CONTINENTAL 60815 and the remaining parts above.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

11 Temperature Sender / Sensor parts are listed for the 2021 Ram Promaster 2500, from MOPAR, DORMAN, GPD and 7 other brands. DORMAN 926427 carries the "Popular" badge.

Economy: 4 parts, from DORMAN, GPD, UNITED MOTOR PRODUCTS and 1 other brand. A representative part number is DORMAN 926427.

The Standard Replacement section: 7 options from MOPAR, BECK/ARNLEY, DELPHI and 3 other brands. BECK/ARNLEY 1581735 is listed in this group.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

8 Thermostat parts for the 2021 Ram Promaster 2500 come from 7 brands — DORMAN, SKP, AISIN and 4 other brands. The "Popular" part is DORMAN 9023036.

The Economy section: 3 options from DORMAN and SKP. DORMAN 9023036 is listed in this group.

Standard Replacement: 5 parts, from AISIN, FOUR SEASONS, GATES and 2 other brands. A representative part number is AISIN THRCH0015.

Part numbers include DORMAN 9023036, DORMAN 9023036XD and SKP SK121227, among others listed above.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

7 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Ram Promaster 2500, from FEL-PRO, MAHLE / CLEVITE, APEX and 1 other brand. FEL-PRO 35974 carries the "Popular" badge.

This group includes FEL-PRO 35974, MAHLE / CLEVITE C32590 and APEX AWO2330 and the remaining parts above.

This table covers the housings and outlets the thermostat sits in. Read more

8 Thermostat Housing / Water Outlet parts for the 2021 Ram Promaster 2500 come from 7 brands — DORMAN, SKP, AUTOTECNICA and 4 other brands. The "Popular" part is DORMAN 9023102HP.

The Economy section: 3 options from DORMAN and SKP. DORMAN 9023102HP is listed in this group.

Standard Replacement: 5 parts, from AUTOTECNICA, FOUR SEASONS, GATES and 2 other brands. A representative part number is AUTOTECNICA CY0719439.

Listed part numbers: DORMAN 9023102HP, DORMAN 9023102 and SKP SKCO34803, plus the other parts above.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

12 Water Pump parts for the 2021 Ram Promaster 2500 come from 11 brands — MOPAR, SKP, FVP and 8 other brands. The "Popular" part is SKP SK1204450.

The Economy section: 4 options from SKP, FVP, US MOTOR WORKS and 1 other brand. SKP SK1204450 is listed in this group.

Standard Replacement: 8 parts, from MOPAR, ACDELCO, GATES and 4 other brands. A representative part number is ACDELCO 252983.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Water Pump Gasket parts are listed for the 2021 Ram Promaster 2500, from ULTRA-POWER, APEX, FEL-PRO and 2 other brands. ULTRA-POWER 35982 carries the "Popular" badge.

This group includes ULTRA-POWER 35982 and APEX AWP3283 and the remaining parts above.